William Lionel Wyllie (5 July 1851 – 6 April 1931) also known as W. L. Wyllie was a prolific English painter of maritime themes in both oils and watercolours. He has been described as "the most distinguished marine artist of his day." His work is in the Tate, the Royal Academy, the Imperial War Museum, the National Maritime Museum, the National Museum of the Royal Navy, and many other institutions around the world.